Count the columns in my game AIRPIPES and you have the answer. You can move the text by a column when you alter the value in A just before calling the print from the ROM. Since the ZX81 can handle less than 32 bytes (compressed screen) it can also handle more by just making a screen wirh more column...

HI Adam I tried to run it with EO V1.6 and an emulated ZX81 havng 48K ram, but it crashes :( It works with 16K and 32K ram. So it will not work with my real 56K Zeddies???? Siggi The famous 48K bug. I encountered this in a 1K hires game. During display in upper memory an opcode with bit 6 set and u...